Github user zentol commented on a diff in the pull request:
https://github.com/apache/flink/pull/4586#discussion_r135764533
--- Diff:
flink-metrics/flink-metrics-prometheus/src/main/java/org/apache/flink/metrics/prometheus/PrometheusReporter.java
---
@@ -130,7 +139,11 @@ public void notifyOfAddedMetric(final Metric metric,
final String metricName, fi
metric.getClass().getName());
return;
}
- collector.register();
+ try {
+ collector.register();
+ } catch (Exception e) {
+ LOG.warn("There was a problem registering metric {}:
{}", metricName, e);
--- End diff --
We usually don't include placeholders for exceptions (because they are
added implicitly), i.e. it should be ```LOG.warn("There was a problem
registering metric {}.", metricName, e);```
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